<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<body>
    <script>
        function Person(){
            this.sayHi = function () {
                console.log('hi');
            }
            
        }
        var p1 = new Person();
        p1.sayHi();
        var p2 = new Person();
        p2.sayHi();
        console.log(p1.sayHi == p2.sayHi);
        
    </script>
</body>
</html>